PTFE caps. ZHEJIANG AIJIREN TECHNOLOGY INC. (3) puncture 4) 8mm PTFE /silicone septa, has excellent chemical inertness, acid and alkali resistance 5) 8mm screw black open top pp caps 1-4ml-autosampler-vials Appcation: Aijiren has been involved in 1.5mL 9mm Screw Neck Vial ND9 Caps with Septa 1. 1.5ml/2ml Short screw Thread ND9, wide ...